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  • ASTM
    D2225-20 Standard Test Methods for Silicone Liquids Used for Electrical Insulation
    Edition: 2020
    $68.64
    Unlimited Users per year

Description of ASTM-D2225 2020

ASTM D2225-20

Active Standard: Standard Test Methods for Silicone Liquids Used for Electrical Insulation




ASTM D2225

Scope

1.1 These test methods cover the testing of silicone liquids for use in transformers, capacitors, and electronic assemblies as an insulating or cooling medium, or both. These methods are generally suitable for specification acceptance (Specification D4652), factory control, referee testing, and research.

1.2 Although some of the test methods listed here apply primarily to petroleum-based fluids, they are, with minor revisions, equally applicable to silicone liquids.

1.3 Silicone liquids are used for electrical insulating purposes because of their stable properties at high and low temperatures and their relative environmental inertness.

1.4 A list of the properties and standards are as follows:

Property Measured

Section

ASTM Test Method

Physical:

 

 

 Color

 6

D2129

 Flash point

 7

D92

 Fire point

 7

D92

 Polychlorinated biphenyl
  content

 8

D4059

 Pour point

 9

D97

 Refractive index

10

D1807

 Specific gravity

11

D1298, D1481, D4052

 Volatility

12

D4559

 Viscosity

13

D445

Chemical:

 

 

 Acid number

14

D974

 Water content

15

D1533

Electrical:

 

 

 Relative permittivity

16

D9242

 Dielectric breakdown
  voltage

17

D8773

 Dielectric breakdown
  voltage

17

D1816

 Dissipation factor

18

D9242

 Specific resistance

19

D11692

 Compatibility

20

D5282

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


Keywords

electrical insulating liquid; silicone liquid;


ICS Code

ICS Number Code 29.040.10 (Insulating oils)


DOI: 10.1520/D2225-20

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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